 | 1922 USSR formed by Soviet states 1939 - 1945 World War II 1945 Atomic bomb detonated (Hiroshima) 1950 Korean War begins 1964 - 1973 Vietnam War | 1895 Marconi invents wireless telegraphy 1899 Boer War begins 1903 Wright brothers 1st plane flight 1912 Titanic sinks on maiden voyage 1914 - 1918 World War I | 1830 French Revolution 1837 Queen Victoria assumes throne 1854 Crimean War with Russia 1869 Opening of Suez Canal 1871 Franco - Prussian War |
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| | |  |  | Pieter Heij b.1836 Reeuwijk, Netherlands d.1906 Reeuwijk, Netherlands | |||
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| | | Berthus Gerard Heij b.1864 Reeuwijk, Netherlands d. | | Jacoba van Vliet b.1835 Reeuwijk, Netherlands d.1929 's-Gravenh, Netherlands |  | ||
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|  | Pieter Heij b.1889 Reeuwijk, Netherlands d. | ||||||
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| Petronella Heij b. Living d. |  |  | Pietje de Jong b.1862 Zevenhuizen, Netherlands d. | ||||
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| Johannes Francois Heij b. Living d. | | | |||||
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|  | Cornelia Alida Jansen b.1886 Gouda, Netherlands d. | ||||||
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